Valve.



@ook and Stute of iiiiiio puppet type adapted for une in interinali eeliibustioe than @Cem-"s Vixen i valve wiii iis veife s f "VAI,-

` BRELL AND 313 MES "QR-EILL, G33 CHICAGO, ULNOS, ASSGNOBS T0 C0., lNC. 1T?

CHICAGO, ELLNGS, A. CGRPQRTIN Be :it known. that; ve, HLLIAM ViimELL an. e JAMES Eminem, eitizeis oi he Uiiieci Suites? residing et Cixi D f. in iie eeuu f ei have in "vented eeimiii new and useful imneveiiieii's ii Valves, 0i which Sgiie lfollowing; 'is e, specifi-- Gatien.

This iiLn/'enfgieii relates ie 'w G'i'eat diiieuity heg; been enCeluitei'efiv in 'the operation of inefiizii eeiiibxistieu e11- giiies in Obtaining and iiiziinpaiiiiiig e, @ein feet; seating @if fera geneiwiiiy ueeci, so

the valve L been Coi'. wie i of e seiid. been; the Seating' ffice ef win/eh musi; ee :if sciiuteiy *wie Wi'ii the veiie. genie-any irrieg Alien in weed 'M Lii Specification ef Lehel-5 Eeeiitf mes siieii es .ure used in :iieomebiies zieml e i sagre, buc 1 wei` adapted fue use ii: eli inStmices where wives of his type are empieyed.

in the accompanying dxmvizigs, We i1: Je 'iiiusiaiieigi zi prix. iieiil embedim'eu of the iiiveni'ien :is the esame has been practised by US, iti'ieiiig understood ihet in die adaptation of the iiivemiieii te speeiiie types (if enginesj changes iii *die shape ei' :ferm :imi deusiiis im); be made witheu; departing from die spirit Oil' Scope 0i' iiie invention is ezzimeci.. in the drawings, fer-ming :i pari 0i: this s eeiic: tion, iik@ numerals of reference in iiieae like parte throughout ibhe dii'ei'eiii; views of the drawing/3S, in wliiei" Figure l is e View partly iii siii'e eievriieii, emi" partly in veiieui seeiom of :i vulve eensiiueted .in aeeei'eimiee with ein' iiiveii fion. the ss'ieiii being breken mmy;

Fig. i2. is :1. teg) 'ein i1 View of the valve; Fig. i Diam view of eue of the imi'iinze from which the waive body ferme@ Show-- ing by detied. lineey how he siits in the as hollow, and the valve body, later de scribed, is mounted on this hollow extension, and the extreme end of the latter then lianged over as shown at 5% To clamp the valve body in position, the bore of the extension is hexagonal or other similar Shape in order to receive a tool for changing the position or adjusting the valve.

'The valve body or head designated by the numeral 9 is made up of laminee or thin metal plates superposed one on the other upon a base plate 1t) that is mounted on the shoulder 6, the metal plates forming the valve body or head being securely clamped down and bound between the base plate l0, and a top or outer plate 11, by the turned over end or flange 5*.

The laminac from which the valve body are'forn'ied are radially slit from the periphery inwardly approximately threefourths of the distance between the =pe riphei'y and the central opening 7. A nurnber of these slits or cuts as 8 are inade in each of the lainiiiac, and when the sheets arev assembled in superposed relation, the slits in each sheet are staggered with relation to the adjacent sheet or sheets so that in no two sheets that are in engagement .with

- each other will the slits in one sheet register with those of the contacting sheet. These slits are for the purpose of providing a more flexible and resilient surface, and also to prevent excessive warping of the laminae.

In construction, the parts are assembled, the laminas being tightly clamped together, and then turned down in a lathe to forni tlie face 12 of the valve head that is to engage the valve seat. In the turning-down or shaping of the valve head, the base plate' down the same in a lathe instead of by bulting or grinding'the same to shape. The action of the turning-down tool on the tightly clamped laminar impartis to the bcvelcd jiei'iphery or fare 12 ot' the valve head a practically solid appearance to the eye, and gives a smooth seating surface for cngagement with the valve seat. ln use, hoivever` it is to be observed that the point of seatingengagement of the valve head beingl outside the periphery of both plates l() and 'l lJ there isvprsa'itled a tl`exible, yielding sur The portion 5a of the stein that face or portion which readily gives or flexes under pull on the valve stem, so as to cause the valve head to hug the valve seatv valve seat be Worn at one or more points so as to render'saine irregular-the valve head flexing at the low or high points of the seat to effect perfect engagement Without in any Way interfering With perfect seating throughout the remainder of theI valve seat area.

By this construction there isy provided a valve body or head having a'central portion I0? which, in thepresent illustration, `is that portion Within the periphery of the disk 11, and also having a marginal seatingportion 10", being the portion of the lamin lying outside the periphery ofthe disk 11. Since the marginal seating-portion 10b is outside the clamping action of plates 10, and 11, its resiliency is materially greater than that of the central portion, the periphery of disks 11 and 10 however extending to such a point that the laminac are firmly held in their superposed relation. The slitting of the laininae not only provides for a more flexible and resilient surface, and materially obviates warping, but

. also tends to effect and insure a true seating surface at all temperatures and to be so resilient as to cause the valve to be practically noiseless in its operation.

In practice, the laminas used are of treated steel, sufficiently hard to withstand the use to which such valves are subjected and we have found the same to have practically no wearing effect upon the valve seat, obviating the necessity for frequent grinding of the latter, and materially increasing its longevity. This is due to the tlexibilityof the valve head and the yielding blow delivered upon the valve seat in the seating stroke of the valve.

With a. construction as herein shown, should the lamina: be injured from any cause, new laminze, or an entire new valve head may be easily substituted for the damaged one as will be obvious.

What we claim as new is:

1. A valve comprising a valve stem provided near its outer end with a shoulder, a disk base-plate ot' relatively greater diameter than the valve stein mounted on the shoulder, a laminated tapered valve head, formed ot' a multiplicity of superpixsed thin metal plates rif-gradually increasing,r diameter whose periplieries are adapted to touch a valve seat, mounted on the basi ing plate on the valve head of relatively smaller diameter than the base-plate, and

means carried by the stem for binding the` valve head on the stern between the baseplate and theclamping plate. 1.*

2. A puppet valve comprising a tapered laminated valve head composed of a.l plurality of centrally apertured thin metal ,laminae each adapted to have its periphery touch a valve seat and having a plurality of radial slits extending inwardly from the periphery thereof, a valvestem extending through the central apertures in the plates,

the platesbeing mounted in superposed relation with the slits in each plate in staggered relation to the slits in adjacent plates, and means to confine the laminas on the stem.

In testimony tures.

WILLIAM BIRRELL. JAMES BIRRELL.

whereof we aix our 'Signat 

